#sky6 {
  width: 1800px;
  height: 70px;
}
#sky6 .moon6 {
  width: 9%;
  heigt: 60px;
  background-color: gainsboro;
}
#sky7::after {
  content: 'i am sky';
}
#sky {
  width: 100px;
  height: 150px;
  color: #ff0000;
  background-color: #ffc0cb;
}
#sky1 {
  color: green;
}
.moon1 {
  background-color: gold;
}
#sky2 {
  border: 1px;
  border-style: dotted;
}
#sky3 {
  background: url("img/round.png");
}
#sky4 {
  width: 600px;
  height: 400px;
  background-color: beige;
}
#sky5 {
  width: 80px;
  height: -100px;
  margin: 400px;
  background-color: #444444;
}
